function getSandboxSession() {
	if(window.ActiveXObject) {
		xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
	} else {
		xmlHttp = new XMLHttpRequest();
	}
	var urls = 'getSession.php?req=yes';
	var msgs = '获取数据成功，请刷新页面';
	xmlHttp.open('GET', urls, false);
	xmlHttp.send(null);
	if(xmlHttp.readyState == 4) {
		if(xmlHttp.status == 200) {
			document.getElementById("msg").innerHTML=xmlHttp.ResponseText;
		}
	}
}